KoolStone C1 Pro Brushless Rock Tumbler Kit — 2.5lb Capacity, Ultra Durable

Discover the KoolStone C1 Pro Brushless Rock Tumbler Kit

Designed for serious hobbyists, the C1 Pro updates the classic design with a brushless motor, a reinforced barrel system, and intelligent speed control. The result is smoother operation, quicker polishing, and a polished finish that can make each stone feel like a small work of art.

Key highlights work together to elevate your tumbling sessions without guesswork. If you’re upgrading from a standard tumbler, you’ll notice how the machine handles more material with less noise, and how the built-in memory helps you repeat your preferred settings with confidence.

Performance that adapts to your goals

• Brushless motor delivers fast, efficient tumbling and longer service life, with claims of up to 20,000 hours.
• Durable 2.5lb capacity and a rubber barrel that reduces noise by about 75% compared with typical plastic barrels.
• Three-speed control plus a nine-day timer with automatic shutoff and memory function for precise, repeatable results.

What’s included and how it supports your projects

• Complete starter kit: rock tumbler, 2 belts, 1lb of rough gemstones, four polishing grits, ceramic media, a sifter, jewelry fastenings, and an illustrated tutorial.
• Optional upgrade: combine with KoolStone’s 4lb polishing grit for longer runs and more consistent finishes.

Real-world use: turn raw rocks into smooth gems for display, craft jewelry components, or simply enjoy the tactile rhythm of a well-tuned tumbler. The memory function helps you salvage repeatable results across sessions, while the redesigned barrel design reduces vibration and keeps your workspace calmer.

Please note: Benefits described reflect design enhancements and user experiences; results can vary based on materials and process settings.